XML 181 R165.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Stockholders' Equity - Dividend Limitations (Details) - Principal Life Insurance Company Only $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($)
Dividend Limitations |
Dividend limitation as percentage of statutory policyholder surplus (as a percent) | 10.00%
Dividends that can be paid in upcoming calendar year without exceeding statutory limitation | $ 1,313.1

X
- Definition Represents the limitation on stockholder dividends as a percentage of the entity's statutory policyholder surplus as of the preceding year-end. + References No definition available. + Details
Name: | pfg_DividendRestrictionPercentageOfPolicyholdersSurplus
Namespace Prefix: | pfg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_StatutoryAccountingPracticesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of dividends that can be declared or paid without approval of regulatory agency. + References No definition available. + Details
Name: | us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=pfg_SubsidiariesPrincipalLifeInsuranceCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |